function GuiTableRowMails() {
};

GuiTableRowMails.instance = function(prefix) {
  return { number: document.getElementById(prefix + '_number_td'),
           sendDate: document.getElementById(prefix + '_date_td'),
           usedDay: document.getElementById(prefix + '_usedday_td'),
           unUsedDay: document.getElementById(prefix + '_unusedday_td'),
           progress: document.getElementById(prefix + '_progress_td')
         };
};